Why is using BufferedInputStream to read a file byte by byte faster than using FileInputStream?

Question

I was trying to read a file into an array by using FileInputStream, and an ~800KB file took about 3 seconds to read into memory. I then tried the same code except with the F

Answer 1

A BufferedInputStream wrapped around a FileInputStream, will request data from the FileInputStream in big chunks (512 bytes or so by default, I think.) Thus if you read 1000 characters one at a time, the FileInputStream will only have to go to the disk twice. This will be much faster!